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How Many Solar Panels And Batteries Do I Need?

Are you presently considering adding a solar system to your home? With several homeowners in the UK using solar now, many more are realizing the numerous benefits they stand to derive by getting one. Therefore, if you’re thinking about adding the system to your home but do not know where to start, you’ve come to the right place.

Here, we’ll help you calculate the number of solar panels and batteries you’ll need to power your home. Starting from the panels, you can begin by taken into account everything that makes use of power in your home to get a good idea of how many you’ll need.

• Firstly, you’ll have to determine the number of watts you use. Simply go through your utility bill for kilowatt-hours (kWh). This varies amongst homes and being able to identify your daily average energy usage will assist you in getting your solar needs.

• Secondly, you have to determine the peak sunlight hours - having in mind that the solar panels only work when under direct sunlight. Once determined, you can then multiply the figure in hours by your home’s hourly energy usage and divide by your selected solar panel’s wattage.

Generally for a 1500 square foot house, you might need around 15 to 18 solar panels to cover the house’s electricity.

Meanwhile for batteries, there are also some factors to be considered to determine the number of batteries you’ll need for your house. These factors include your home’s power or electricity usage, the period of time in which the battery will be used as well as the battery’ specifications. Once done, you’ll be able to calculate the number of batteries required by your home.

Not only will you reduce your electricity bill by generating your own electricity with solar panels, but you can also earn money through the SEG which is offered by large energy suppliers. They’ll pay you for the electricity you export back to the grid. You’ll also reduce your carbon footprint, lessening your impact on the environment.

Air source heat pumps do make a bit of noise. However, it’s the external unit that makes the noise, minimising disruption in your home. And while it’s a good idea to ensure your external unit isn’t located directly under your bedroom window or very close to a neighbour’s property, it won’t be louder than 40-60 decibels. In many cases, this is actually quieter than a fossil fuel-powered boiler.

If you’re thinking about installing a solar thermal system in your house, it’s always important to put into consideration numerous factors before you proceed. While some solar thermal systems are suitable for use at home, there are also some that are suitable for businesses or organizations which normally requires a big amount of hot water like hotels, restaurants, schools, hospitals and many more. You’ll also find some types available in the market that are suitable for communities to satisfy communal hot water demands.

It should, however, be noted that solar thermal systems do not have the capacity to produce all the hot water demand of a house. In the UK, an average household will need an annual water heating of between 3000kWh to 5000kWh. Whereas, a solar thermal system is only able to meet about 40 percent to 60 percent of this demand.

With that in mind, it’s also worth noting that during the summer months when the solar radiation is at its peak and hot water demand is relatively lower when compared to other seasons, a solar thermal system may be able to provide all of your household’s hot water needs. This implies that during this period you may not find the need to operate your boiler at all. However, during winter or colder months, when you have a higher hot water demands in contrary to a lower solar radiation, a solar thermal system will only be able to take care of about 20 percent of your household’s hot water needs. And that ultimately implies that during this period, you’ll need to rely more on a alternative or backup source of heat like gas, coal, electricity, oil or LPG.

So do you wish to take advantage of the heat generated by the ground to warm up your home by getting a ground source heating pump? If yes, then you’d also probably be wondering how much a ground source heat pump is going to cost so you can set a budget and start planning.

Installing and running ground source heat pump can cost between the range of £600 to £700 to run on an annual basis, meanwhile it can cost you within a range of £13,000 to £19,000 to have installed. However, you should take note that these prices can be by varying influencing factors such as the size of the installation as well as any other extra work that may needed to complete the job.

When it comes to estimating the time it takes to recover the initial cost of the system via energy savings, nothing is certain as this can be very hard to determine or predict. The main reason for this is due to the fact that it’s dependent on the efficiency of your heating system, the type of system you’re replacing ( whether or not you qualify for Renewable Heat Incentive -RHI payments ), the efficiency of your home’s insulation, how efficiently the system’s controls are being used and how the heat generated from the ground source heat pump would be put to use. However, to figure out how much you’ll save, the type of fuel replacing is perhaps the most essential. For a four bedroom detached house, you can save between a range of £1,200 to £1,300 for a LPG fuel replaced, £1,400 to £1,500 for an electricity fuel replaced, £600 to £700 for an oil fuel replaced and finally, £200 to £300 for a solid fuel replaced.

Solar panels provide an alternative to paying expensive National Grid energy rates, so primarily their first major benefit is helping to reduce bills. Solar PV panels will produce free electricity, whilst solar thermal panels generate heat for hot water and space heating. There are also payment incentives known as the Feed-in Tariff scheme (FITs) (for solar PV) and the Renewable Heat Incentive (for solar thermal) which guarantee a tax-free income for 20 years.

Air source heat pumps work by taking heat from the air and using it to heat your home. They absorb heat from the air into a fluid, which then goes to a compressor where it gets hotter. This heat is then used to warm up water or air, which is distributed around your home.

First and foremost, you should know that heat pump is simply a device whose primary function is the transmission of thermal energy from one spot to the other. A good example can be found in the refrigerators whereby the evaporation as well as cooling of a liquid is incorporated to lower the storage compartment’s temperature. In recent times, this whole technology is utilized to draw the potential thermal energy present in the air outside and transmit it directly to the home or property where it’s going to be compressed and the heat transferred with the help of a number of coils. This is exactly what an air source heat pump does as it absorbs heat from the air and convert it into a higher temperature using a compressor. How the air source heat pump works is really simple, it’s just like a refrigerator but in reverse. Let’s take a look!

• The air source heat pump extracts heat present in the outside air into a liquid refrigerant at a reduced temperature.
• The pump then compresses the liquid to increase its temperature with the help of electricity. Once done, it then compresses it back to liquid so as to free the heat stored.
• The heat released is then directed to the radiators or under floor heating, while the ones left would be stored in the hot water cylinder.
• The hot water that’s stored can be used for showers, baths as well as taps.

Overall, the air source heat pump is an efficient way to make your home warm. It makes use of electricity to function, but it should consume lower electrical energy than the heat it generates.

If you’re thinking about installing ground source heat pumps for your home, you’ll definitely want to know whether or not its worth the money. In this article, we’re going to look at the various benefits and drawbacks of the heat pump to enable you make an informed purchase decision.

As a result of their high efficiency rate and low running cost, ground source heat pumps are incredibly low carbon heating system which are presently experiencing a rapid increase in popularity, therefore they can actually be a valuable investment. This type of heat pump utilizes the constant temperature of the ground to provide warmth to your home - either for a space or for water heating purposes. Upon installation, the cost of running ground source heat pump is relatively low. What’s more? This type of heating system is eligible for the Renewable Heat Incentive (RHI) which means you can also earn an extra income on the side as well. However, what makes most homeowners think twice before installing a ground source heat pump is the high cost of installation.

Heat pumps are greatly essential especially when it comes to minimizing the UK’s total carbon emissions. At present, there about 240,000 units of the heat pump installed and to help attain the UK’s 2050 Net Zero goals, an extra 19 million heat pumps will have to be installed. If you wish to help in the achievement of this goal, you can start by investing in a ground source heat pump. So let’s look at some of the pros and cons of the heat pump.

PROS

✓ Low running costs

✓ Low carbon heating

✓ Energy efficient

✓ Eligible for grants

✓ Increases property value

✓ Provides both cooling and heating

✓ Inexhaustible

CONS

✓ High installation costs.

✓ The soil type impact its level of efficiency.

✓ It can be hard to install in retrofits.